CVE-2023-25811 json
Persistent Cross site scripting (XSS) in Uptime Kuma
published 2023-02-21 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-29704
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
Uptime Kuma is a self-hosted monitoring tool. In versions prior to 1.20.0 the Uptime Kuma `name` parameter allows a persistent XSS attack. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Patch / fix
- uptime-kuma_project uptime-kuma 1.20.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/louislam/uptime-kuma/security/advisories/GHSA-553g-fcpf-m3wp referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- louislam uptime-kuma
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/louislam/uptime-kuma/security/advisories/GHSA-553g-fcpf-m3wp
exploit, third-party-advisory
Sources
- CVE List CVE-2023-25811
- NVD CVE-2023-25811
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